64478834 has 16 divisors (see below), whose sum is σ = 110714688. Its totient is φ = 27588912.

The previous prime is 64478833. The next prime is 64478839. The reversal of 64478834 is 43887446.

It is not an unprimeable number, because it can be changed into a prime (64478833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6077 + ... + 12879.

It is an arithmetic number, because the mean of its divisors is an integer number (6919668).

Almost surely, 2^64478834 is an apocalyptic number.

64478834 is a deficient number, since it is larger than the sum of its proper divisors (46235854).

64478834 is a wasteful number, since it uses less digits than its factorization.

64478834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7489.

The product of its digits is 516096, while the sum is 44.

The square root of 64478834 is about 8029.8713563793. The cubic root of 64478834 is about 400.9950932541.

The spelling of 64478834 in words is "sixty-four million, four hundred seventy-eight thousand, eight hundred thirty-four".